Raspberry plant named &#39;Addison&#39;

ABSTRACT

The present invention is a new and distinct primocane and floricane fruiting red raspberry cultivar named ‘Addison’, which is capable of producing high yields of medium large, dark red, flavorful and firm fruit that are easy to harvest. The cultivar is also characterized by several morphological characteristics, including, a strong tendency toward red coloration of vegetative plant parts, bracts on peduncles, a long necked receptacle, and a slight imperfection of the fruit which can produce flattened surfaces.

FIELD OF THE INVENTION

This invention concerns a new and distinct cultivar of primocane andfloricane fruiting raspberry plant with a botanical name of Rubus ideausL. The new cultivar is distinguished from other cultivars by its darkred fruit; by its combination of fruit firmness, high sugar levels, easeof picking and size; several growth characteristics; and productivity intwo seasons. ‘Addison’ is thereby suitable for premium fresh fruitmarketing and local or on farm marketing.

DESCRIPTION OF RELATED PRIOR ART

Several cultivars of dark colored red raspberry fruit are known. Thepresent invention, ‘Addison’ fruit is dark colored in appearance. Fullyfruit ripens to 2001 Royal Horticultural Society Colour Plate No. 46Aand remains on the plant until overripe and darker red color,reminiscent of 2001 Royal Horticultural Society Colour Plate No. 59A atoverripe. ‘Caroline’ (U.S. Plant Pat. No. 10,412) and ‘Crimson Giant’(U.S. Plant Pat. No. 23,375) fruit, other dark colored fruit, ripen with2001 Royal Horticultural Society Colour Plate No. 45A and 46A.‘Wakefield’ (U.S. Plant Pat. No. 21,185) and ‘Jaclyn’ (U.S. Plant Pat.No. 15,647), two additional dark colored fruiting red raspberrycultivars, have a similar color to ‘Addison’, reminiscent of 2001 RoyalHorticultural Society Colour Plates No. 59A and N77 when ripe andoverripe. ‘Meeker’ (unpatented) fruit is similar to ‘Wakefield’ (U.S.Plant No. 21,185) in coloration. ‘Crimson Night’ (U.S. Plant Pat. No.24,949) fruit ripens slightly darker. Of the above dark fruitedcultivars, only ‘Addison’, ‘Crimson Giant’ (U.S. Plant Pat. No. 23,375)and ‘Caroline’ (U.S. Plant Pat. No. 10,412) are both spring and fallfruiting. ‘Wakefield’ (U.S. Plant Pat. No. 21,185) and ‘Meeker’ areexclusively spring (floricane) fruiting and ‘Jaclyn’ (U.S. Plant Pat.No. 15,647), ‘Crimson Night’ (U.S. Plant Pat. No. 24,949) and ‘CrimsonGiant’ (U.S. Plant Pat. No. 23,375) plants are primocane fruiting.‘Addison’ can be distinguished from ‘Caroline’ (U.S. Plant Pat. No.10,412) in having larger, much firmer fruit on more vigorous canes.‘Addison’ plants produce a lower number of canes than ‘Caroline’ (U.S.Plant Pat. No. 10,412). ‘Addison’ leaves do not regularly curl in highsun and warm temperatures as ‘Caroline’ (U.S. Plant Pat. No. 10,412).‘Addison’ can be distinguished from ‘Crimson Giant’ (U.S. Plant Pat. No.23,375) by season of fall cropping, which is much earlier in ‘Addison’.‘Jaclyn’ (U.S. Plant Pat. No. 15,647), another fall bearing, darkfruited, red raspberry with other species in its pedigree, like‘Addison’; can be distinguished from ‘Addison’ on fruit characteristicsand harvest season. ‘Jaclyn’ (U.S. Plant Pat. No. 15,647) is a shortstatured, early fall season, very conic fruited cultivar. ‘Addison’fruit is truncated conic and harvest occurs a month after ‘Jaclyn’ (U.S.Plant Pat. No. 15,647) on primocanes. ‘Jaclyn’ (U.S. Plant Pat. No.15,647) does not produce a large spring crop, unlike ‘Addison’.‘Addison’ fruit is easy to remove unripe, ‘Jaclyn’ (U.S. Plant Pat. No.15,647) fruit is difficult to pick when fully ripe. ‘Crimson Night’(U.S. Plant Pat. No. 24,949) fruit are smaller than ‘Addison’ and ripenon primocanes approximately two to three weeks later than ‘Addison’.

ORIGIN OF THE NEW CULTIVAR

The new cultivar of red raspberry, ‘Addison’, originated from acontrolled cross in Winter in a screened glasshouse in College Park, Md.The cross, designated: “DA” is a cross of SDO-1 (female-unpatented)×RH-5(male-unpatented). SDO-1 is a soft fruited, but productive cross of ON-1(female-unpatented)×‘Emily’ (male-U.S. Plant Pat. No. 12,350). ON-1 is across of HBK-5 (female-unpatented)×LA-2 (male-unpatented). HBK-5 iscross of ‘Lauren’ (female-U.S. Plant Pat. No. 10,620)×NY 817(male-unpatented). LA-2 is a cross of R. innominatus S. Moore(female-wild species, unpatented)×‘Glen Garry’ (male-unpatented). RH-5is a very vigorous cross of GEL-114 (female-unpatented)×NE-2(male-unpatented). GEL-114 is a cross of ‘Southland’ (female-unpatented)by SCRI 86E316 (male-unpatented). NE-2 is a cross of FD-2(female-unpatented)×‘Emily’ (male-U.S. Plant Pat. No. 12,350). FD-2 is across of R. flos-culosis Focke. (female-wild species,unpatented)×‘Citadel’ (male-unpatented).

The year of crossing was 2000; thus the year designation was “V”. Theseed from this cross were germinated in College Park, Md. andtransported to the breeding field in Wilmington, Ohio where theseedlings were evaluated in 2003 and 2004. ‘Addison’ was the secondselection of the VDA progeny in Ohio and was therefore designated “-o2”.Thus, the complete breeding designation of ‘Addison’ is “VDA-o2”. Thereare no synonyms for ‘Addison’.

SUMMARY OF THE NEW CULTIVAR

This application relates to a new and distinct red raspberry cultivar,botanically known as Rubus ideaus L. The following characteristics areoutstanding:

-   -   1. Production of high yields of medium large, firm, fruit in        both the Spring on floricanes and Fall on primocanes.    -   2. The dark fruit has been determined to have high sugar levels,        is storable, and is easy to harvest.    -   3. Unlike purple raspberries, which have similar dark fruit, the        present invention does not have Rubus occidentalis L., the black        raspberry, for at least four generations back in its pedigree.

These characteristics make ‘Addison’ suitable as a summer and fallfruiting type for premium fresh fruit marketing in commercial productionareas worldwide. In cooler areas with less than 2500 growing degree days(base 50° F.), ‘Addison’ primocane fruit ripens in early August andthrough September, making it sufficiently early to use as a primocanebearer in unprotected culture for almost all agricultural regions in theUnited States.

The following characteristics are useful in distinguishing this cultivarfrom other cultivars and can be useful for cultivar identification.Plants used for these observations were grown in uncrowded conditions inclear plastic unshaded tunnels or greenhouses.

-   -   1. On newly established tissue culture propagated plants,        ‘Addison’ plants produce primocanes which terminate in flower        clusters within 5 months after planting. ‘Addison’ canes usually        produce flowers at the 30^(th) node in pots in tunnels at 2900        ft. elevation in Maryland, United States. Buds subtending the        30^(th) node produce a full floricane crop in the following        spring.    -   2. Ripe ‘Addison’ fruit is dark red in appearance reminiscent of        2001 Royal Horticultural Society Colour Plate No. 46A and        remains on the plant until overripe and develops darker red        color, reminiscent of 2001 Royal Horticultural Society Colour        Plate No. 59A at overripe. After 7 days of storage at 40° F.,        fruit darkens to red purple reminiscent of 2001 Royal        Horticultural Society Colour Plate No. 79A.    -   3. The vegetative above-ground portions of ‘Addison’ plants have        a strong tendency to produce deep red color. Therefore, healthy        canes, petioles, petiolules, peduncles, sepals and the base of        major leaf veins will become red if exposed to full sun        consistently. The extension of the color into the leaf veins is        uncommon for raspberry and can be used to identify ‘Addison’        plants grown in full sun.    -   4. The flowering area on floricanes and primocanes have several        monofoliolate leaves, as is common on some raspberry cultivars.        ‘Addison’ peduncles also have reduced size, less than 1 cm. in        length, monofoliolate leaves which look like bracts.    -   5. The fruit of ‘Addison’ has an imperfection on its collar,        specifically, a drupelet will occasionally drop from the uniform        basal row of drupelets to half way to the second row of        drupelets. This imperfection causes the fruit to have an angular        area when viewed from the base of a harvested fruit; that is,        the cavity is not completely round or oval. This angle can cause        a side of the fruit to be flattened. This imperfection does not        cause fruit to crumble during harvest as the receptacle        attachment to the fruit occurs only on the apical two thirds of        its length. The imperfection occurs over the basal neck of the        receptacle where no vascular attachment can stress the fruit        during detachment.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs show typical characteristics of the newvariety; the measuring stick is in numbered centimeters in FIGS. 2, 3, 6and 8:

FIG. 1. shows a thorny ‘Addison’ young primocane section with 2001 RoyalHorticultural Society Colour Plates No. 144 and 183.

FIG. 2. shows the red blush on an ‘Addison’ primocane with 2001 RoyalHorticultural Society Colour Plate No. 183.

FIG. 3. shows an unripe fruit of ‘Addison’ with its peducle thorns andtypic bracts or reduced size monofoliolate leaves.

FIG. 4. shows the coloration of the upper surface of the midrib of an‘Addison’ leaf.

FIG. 5. shows the apical third of the flowering and fruiting section ofan ‘Addison’ primocane and the relatively long receptacle neck where novascular connections attach to the fruit.

FIG. 6. shows a series of ‘Addison’ fruit from unripe and notharvestable on the left to commercial pick to ripe to overripe on theright; and 2001 Royal Horticultural Society Colour Plate Nos. 42 onleft, 46 on bottom and 59 on the right.

FIG. 7. shows an ‘Addison’ fruit and the dropped drupelet on the collarwhich causes a deformation of the fruit.

FIG. 8. shows early primocane fruit of ‘Addison’ immediately afterpicking in August.

FIG. 9. shows the same fruit in FIG. 8 after 7 days of storage at 40° F.

DESCRIPTION OF THE NEW CULTIVAR

The following is a detailed description of ‘Addison’, the new cultivar,including fruit production, together with the cultivar's morphologicalcharacteristics. ‘Addison’ is a species hybrid, which contains apredominance of Rubus ideaus L. traits and would be botanicallyclassified in that species commonly referred to as red raspberries. Thedescription is based on information from plants grown in tunneled fieldsat 2900 feet elevation in Oakland, Md. and in open fields in Wilmington,Ohio. As these climates differ, particularly in temperatures experiencedin the growing season, we believe the description of ‘Addison’ will beconsistent in other locations.

‘Addison’ produces a moderate number of root- and crown-suckers(approximately 19 per 10 gallon pot with a two year or older plant),more than ‘Anne’ (U.S. Plant Pat. No. 10,411) and ‘Josephine’ (U.S.Plant Pat. No. 12,173), similar to ‘Marcianna’ (U.S. Plant Pat. No.21,007), but less than ‘Caroline’ (U.S. Plant Pat. No. 10,412) and‘Heritage’ (unpatented). Young plants can produce more canes after thefirst flush, especially when the initial canes are removed or damaged.During the growing season, canes are light green colored, similar to2001 Royal Horticultural Society Colour Plate No. 144B in spring and144C in fall before leaf color changes (FIG. 1). ‘Addison’ canes arecharacterized by the large amount of red blush on all well lightedportions of the cane. The deep red blush is reminiscent of 2001 RoyalHorticultural Society Colour Plate No. 182C in the spring and 183B inthe fall (FIG. 2). Canes have a very light pubescence and very lightwaxiness. Field grown canes are usually stiffly semi-erect by the secondyear of a plant's growth. ‘Addison’ primocanes can branch vegetativelyat the base of the original cane, typically up to 5 times; however, mostcanes on older plants (>88%) do not branch. Total node number per cane,including flowering nodes, averages 45.9 on first year tissue cultureproduced plants. By comparison, ‘Heritage’ (unpatented) produces 39nodes per cane, ‘Caroline’ (U.S. Plant Pat. No. 10,412) produces 36nodes per cane on tissue culture produced first year plants, ‘Marcianna’(U.S. Plant Pat. No. 21,007) produces 40 nodes per cane and ‘Josephine’(U.S. Plant Pat. No. 12,173) produces 48 nodes per cane. Vegetativegrowth is moderately vigorous, being terminated by floral development,reaching on average 65.8 inches in tunnels. Cane diameter at 30 cm.above ground averaged 0.95 cm. At the same location, internode lengthaveraged 4.4 cm. Canes develop their normal woody color in the fallchanging from green to the red blush color then to dark brown withapproximately 20% of the cane area having lighter patches (2001 RoyalHorticultural Society Colour Plate No. 177A to 177C). The base of‘Addison’ dormant canes only slightly exfoliate, typically less than 3%of the area of the whole cane.

Thorns are many in density; ranging from 60 to 86 per internode, with anaverage of 69 at the base of the cane (FIG. 1); 0 to 17, with an averageof 6.7 at mid cane height; on average 9.4 per internode in the floralsection of the primocane. Thorn number on a peduncle averages 20.0 onprimocanes and 12.3 on floricanes. Thorn shape is straight andneedle-like and slightly downward pointing, to somewhat recurveddownwards; full sized thorn length is approximately 4 mm. in length atthe base of the cane to 2 mm. at the cane apex to, on average, 1 mm onpeduncles. Thorn width at half height is less than 1 mm at the base ofthe cane to less than 0.5 mm on peduncles (FIGS. 1 and 3). ‘Addison’thorn color is mostly grayed purple (2001 Royal Horticultural SocietyColour Plate No. 183A) in color; including 1 mm. of the surroundingepidermis of the cane. This thorn coloration of the cane is in an ovaloriented with the long axis parallel to the axis of the cane. By thelast months of the growing season, the tip of the thorn becomes brown(2001 Royal Horticultural Society Colour Plate No. 177D). The color ofthe thorns turns completely brown (2001 Royal Horticultural SocietyColour Plate No. 177D) in the dormant season, matching that of theoverwintering floricanes. A similar pattern occurs with lateral buds,which turn cane-colored green to brown (2001 Royal Horticultural SocietyColour Plate No. 177A) and are typical in size and shape of the species.Secondary buds were observed on less than 5% of the ‘Addison’ nodes,mostly at the mid and basal sections of the cane.

In late Spring, the lower surface of primocane ‘Addison’ leaves ispubescent grey-green resembling 2001 Royal Horticultural Society ColourPlate No. 191C becoming 194B in the fall. The upper surfaces of bothprimocane leaves are medium green, most closely in hue to 2001 RoyalHorticultural Society Colour Plate No. 143A, depending on the amount ofN fertilization and time of season. Petiole color, when unblushed, isreminiscent of 2001 Royal Horticultural Society Colour Plate No. 144B.Senescing leaves have a green yellow color resembling 2001 RoyalHorticultural Society Colour Plate No. 146A. Leaves abscise readily inOctober and November. ‘Addison’ petioles and the basal portion of themidribs of the leaves readily blush the same red color as found on canes(FIGS. 2 and 4). The extension of the color into the upper surface ofthe midrib is indicative of the cultivar if grown in well lightedconditions (FIG. 4).

‘Addison’ plants have leaves that are mostly trifoliolate withpentafoliolate leaves occurring on primocanes of vigorously growingolder plants. In the floral section of the primocane, only trifoliolateand monofoliolate leaves occur (FIG. 5). The trifoliolate terminalleaflet is, on average, 9.2 cm. wide and 13.4 cm. long on the base ofthe primocane, 6.0 cm. wide and 10.4 cm. long on the floral section ofthe primocane, and 5.8 cm. wide and 8.8 cm. long on spring floricanetrusses. The trifoliolate maximum leaf width, measured from apex of thelateral leaflet to the opposite lateral leaflet apex is, on average,21.6 cm. on the vegetative and 15.8 cm. on the floral sections of theprimocanes respectively, and 13.1 cm. on average, on floricane trussleaves. The maximum width of the lateral leaflet for trifoliolate leavesaveraged 6.1 cm. and 4.2 cm., on vegetative and floral portions of theprimocane, respectively, and 4.0 cm. on floricane truss leaves. Thetrifoliolate leaf petiole and terminal petiolule lengths averaged 5.7cm. and 3.3 cm. and 3.1 cm. and 2.4 cm. on vegetative and floralportions of the primocane, respectively, and 4.8 cm. and 1.8 cm. onfloricane truss leaves. Thus the ratio of length of primocane leaves,including petiole and petiolule, to maximum leaf width is near 1 onprimocanes but closer to 1.2 on floricanes. Lateral leaflets are sessileand join at the petiole apex with the apical leaf petiolule (FIGS. 2 and4).

Monofoliolate leaves average 5.1 cm. in length and 2.0 cm in width.Petiole length averages 0.5 cm. On average, 3.3 monofoliolate leavesoccur per floricane truss. In addition, small leaf bracts are found onpeduncles, somewhat typical of ‘Addison’ (FIG. 3). Leaf serration isrelatively simple and uniform sawtooth (FIG. 4). Leaves have moderatelypronounced laminar puckering and typical red raspberry veinationpattern. Leaf stipules are bladelike and average 0.7 cm in length intotal; the basal one half of their length is fused to the petiole sides.

Flowers appear after 30.8 vegetative nodes, on average, on adult plant‘Addison’ primocanes. By comparison, adult ‘Marcianna’ (U.S. Plant Pat.No. 21,007), ‘Heritage’ (unpatented) and ‘Josephine’ (U.S. Plant Pat.No. 12,173) primocanes flower, on average, after 23.8, 28.5 and 35.8nodes respectively. Apical these vegetative nodes, ‘Addison’ primocanefruit appears on 15.2 nodes on average; thus, fruit is borne on 33% ofthe total nodes of the primocanes. The section of the primocane withfruit averages 16.7 inches in length. Based on nodes, the proportion of‘Addison’ cane producing fruit is similar to ‘Heritage’(27%)(unpatented), ‘Caroline’ (29%)(U.S. Plant Pat. No. 10,412), buthigher than ‘Josephine’ (21%)(U.S. Plant Pat. No. 12,173) and less than‘Marcianna’ (42%) (U.S. Plant Pat. No. 21,007). By observation in otherfields, this proportion in ‘Addison’ is greater than that of ‘Anne’(U.S. Plant Pat. No. 10,411), ‘Autumn Bliss’ (U.S. Plant Pat. No.6,597), ‘Autumn Britton’ (unpatented), ‘Amity’ (unpatented), ‘CrimsonGiant’ (U.S. Plant Pat. No. 23,375) or ‘Ruby’ (U.S. Plant Pat. No.7,067).

The floral zone of the primocane is a compound cyme, which results fromthe terminal apex flowering and lateral flowers or trusses arising fromsubtending axillary buds on the cane (FIG. 5). Apical flowers are firstto open on laterals and on the main cane. In ‘Addison’, the apical 1 to5 lateral buds produce very short trusses and multiple fruit fromunbranched or branched peduncles (FIG. 5). More basal buds produceelongated trusses with trifoliolate and monofoliolate leaves. Theaverage number of flowers, arising from an axillary bud position on theprimocane flower truss axis or main cane, from the apex, is: 1, 2, 2, 3,4, 8, 5, 6, 6, 6, 6, 6, 5, 4, 1. The leafy laterals arising from thefloral nodes are, on average, 7 nodes and 10 cm. in length. On average,65 fruit are produced on the primocanes flower trusses.

Floricane flower trusses are typical cymose clusters; with 9.0 nodesbearing flowers apical to on average 3.5 nodes without flowers.Floricane trusses produce on average 17.4 flowers and are 44.7 cm. inlength. Average peduncle length is 3.4 cm.

The unscented flower morphology and early fruit morphology is typical ofmost red raspberry cultivars, having five white (2001 RoyalHorticultural Society Colour Plate No. 155D) petals that average 0.8 cm.long, 0.3 cm. wide on first opening flowers and 0.6 cm. long and 0.3 cm.wide on later flowers; petals abscise after pollination. Nectarproduction is copious, which can result in mold formation on flowers intunnels. On average, early flowers have five 1.2 cm. long, 0.4 cm. wideat the base, triangular grey green sepals (2001 Royal HorticulturalSociety Colour Plate No. 144A) although some general sepal colorationcan fade to yellow (2001 Royal Horticultural Society Colour Plate No.161B) or red (2001 Royal Horticultural Society Colour Plate No. 180C).The sepals have two stripes of pubescence running along their outsidelength which lighten the color of the sepal from the inside to the sepaledge (2001 Royal Horticultural Society Colour Plate No. 143A to 143D),as is typical of red raspberries. ‘Addison’ sepal stripes are thinnerthan several cultivars. Sepals will sometimes roll lengthwise at theedges and will occasionally be unreflexed away from the fruit (FIG. 3).Fruit have green peduncles (2001 Royal Horticultural Society ColourPlate No. 191B) which have thorns and up to 2 reduced monofoliolateleaves reminiscent of bracts (FIG. 3). These bracts are approximately acm. in length and occur on over 90% of the primocane fruit peduncles.The peduncle is noticeably more pubescent than the canes.

Early season floricane flowers have on average 60.8 pistils and asimilar number of anthers, 57.4. These measured flowers develop, onaverage, into 3.0 gram fruit, which averaged 2.50 cm long and 1.98 cmwide with a cavity of 0.84 cm in diameter. Early season primocaneflowers have, on average, 55.6 pistils and 87.7 anthers. These measuredflowers develop, on average, into 3.9 gram fruit, which averaged 2.34 cmin width and 2.05 cm in width with a cavity diameter of 0.96 cm. Antherand pistil color is similar to Royal Horticultural Society Color PlateNo. 157A; none of these traits can be used to identify ‘Addison’.

FRUIT PRODUCTION

‘Addison’ Spring fruit size and weight are moderately large, and reducein size as ripening progresses down individual trusses or trusslaterals. Early floricane fruit averaged 3.3 grams in weight but thelast harvests averaged 2.2 grams. The initial, or early primocane fruitripening is staggered on different canes because the conversion ofvegetative growth to flowering does not occur on all canes as uniformlyas in floricanes; which are well timed when given winter chilling over1000 hours. Over the entire season in a planting, there was noconsistent reduction in fruit size except after 90% harvest. Primocanefruit averaged 3.33 grams on older plants and 3.44 grams on tissueculture plants.

The fruit receptacle remains on the plant after harvest and is slightlywider at its mid-point. However, this causes no distension or breakageof the fruit at harvest as the receptacle neck is elongate, averagingone third of the total length of the receptacle, and fruit attachmentoccurs only on the area of the receptacle which is conic, gettingsmaller toward the apex (FIG. 5). Thus, fruit is detached smoothly, oncethe vascular connections are freed during ripening. The receptacle iscream yellow at ripeness, reminiscent of Royal Horticultural SocietyColor Plate No. 158D and it remains on the plant after fruit harvest.The apical tip of the receptacle will typically darken shortly afterfruit harvest (FIG. 5). ‘Addison’ fruit are cohesive, unless pollinationproblems exist, the fruit does not otherwise shatter under pressure ofhand harvest.

August flowering fruit ripens 29 days after pollination on primocanes ina tunnel in Oakland, Md. In tunnels and in potted culture, floricanefruit was 5% ripe on May 22, 2014, 50% ripe on Jun. 4, 2014 and 95% ripeon Jun. 18, 2014. Primocane fruit was 5% ripe on Aug. 8, 2014, 50% ripeon September 2 and 95% ripe on Sep. 20, 2014. In 2015, on first yeartissue culture plants, primocane fruit ripened beginning July 30, but 5%ripe did not occur until August 13, 50% ripe occurred on September 25and 95% ripe occurred on October 21. First year plants are typicallylater to produce fruit on primocanes on all raspberry cultivarsobserved, thus, the difference in primocane ripening season of older(2014) vs. first year (2015) plants is not unusual to ‘Addison’.

‘Addison’ primocane and floricane fruit undergo a progressive darkeningfrom unripe to ripe to stored overripe. Under-ripe fruit, which cannotbe picked without shattering, closely resembles the hue of 2001 RoyalHorticultural Society Colour Plate No. 42B (FIG. 6). At easily pickedfor commercial shipping and storage, the now red fruit resemble 2001Royal Horticultural Society Colour Plate No. 46B. At full ripe, fruitcolor is 2001 Royal Horticultural Society Colour Plate No. 46A and uponsoftening, 2001 Royal Horticultural Society Colour Plate No. 59A. Upon 7days storage, fruit develops a darker red color, resembling 2001 RoyalHorticultural Society Colour Plate No. 79A.

Fruit have a slight amount of observable pubescence. Drupeletarrangement has a typic fault; the uniform top row of drupelets willhave a single drupelet “drop” to half way to the second row (FIG. 7).This results in an angular defect in the otherwise uniform collar. Thisdefect can result in a flatter than normal face to one side of thefruit. Except when picked unripe, the fruit does not crack upon harvestbecause of this defect.

Commercially picked fruit does not break down after at least one week incommon storage at 40° F. (FIGS. 8 and 9); however, ‘Addison’ is notresistant to spotted wing drosophila (Drosophila suzukii) and fruit willcollapse if inhabited by one or more maggots. During high populations ofthe fruit fly and with no pesticide or fly controls used, up to 40% offruit will not collapse after storage.

Fruit at ripe stage, has 10.1% soluble solids (degrees Brix) byrefractometer. Flavor is sweet and remains so during unfavorableweather. The original selection of VDA-o2 was made based on itssweetness under extraordinary drought conditions in Ohio.

‘Addison’ has been yield tested in a tunnel in Oakland, Md. Thefollowing data were collected in >2 year old potted plants in the Summerand Fall of 2014. ‘Addison’ averaged 1200.1 grams per plant fromfloricanes and 737.5 grams per plant in the primocane season. In 2015,potted tissue culture plants had primocane yields ranging between 597and 1057, and on average, 759.3 grams per plant. At the spacing used inthese measurements, a yield of 1000 grams per plant would be equivalentto 8000 lbs. per acre or 9000 kg. per hectare.

The plant is slightly susceptible to late season leaf rust (yellowrust). The plant's reaction to Phyophthora fragariae var. Rubi root rotis evidently moderately resistant, based on field reaction, not oncontrolled testing. When plants were excessively watered in pots in aglasshouse, symptoms of Phytophthora fragariae var. Rubi were notobserved, while other genotypes succumbed to this root rot and hadPhytophthora sp. isolated from their infested tissues. However, theplant will not tolerate planting in areas with standing water for up toa week. Fruit is usually free from Bottytis rot in unsprayed protectedtunnels, more so than' Anne' (U.S. Plant Pat. No. 10,411) and ‘Caroline’(U.S. Plant Pat. No. 10,411), and similar to ‘Josephine’ (U.S. PlantPat. No. 12,173).

‘Addison’ can be asexually propagated by tissue culture or by rootsuckers. No off-type plants have been observed in the history of asexualpropagation of this cultivar by either method.

What is claimed:
 1. A new and distinct spring and fall bearing, darkfruited, red raspberry plant known as ‘Addison’ as described herein,illustrated and identified by the characteristics set forth above.